Up until now, I've just used my 8" Powermatic 60HH with the fence square to the bed. Tonight I needed to cut a 45 degree chamfer along the edges of a long board and thought I'd try it on the jointer. I couldn't get it to work though. The chamfer gets increasingly smaller as you push the board through, so on a 5ft board I'd say it went from a 1/2" chamfer down to a 3/8" chamfer. This was on 4 separate test cuts, so I gave up and did it on the table saw.
The jointer otherwise works perfectly fine for square cuts, so I'm wondering if I missed some technique other than "tilt the fence to 45 degrees and run your board through".